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<div class="textblock"><code>#include &lt;sys/types.h&gt;</code><br/>
<code>#include &quot;<a class="el" href="global_8h_source.html">global.h</a>&quot;</code><br/>
<code>#include &quot;sha2/sha2.h&quot;</code><br/>
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<p><a href="hmac_8h_source.html">Go to the source code of this file.</a></p>
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Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structdtls__hmac__context__t.html">dtls_hmac_context_t</a></td></tr>
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Macros</h2></td></tr>
<tr class="memitem:a7fb242dc4ddd717e5eb67d4bf89618d5"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="hmac_8h.html#a7fb242dc4ddd717e5eb67d4bf89618d5">DTLS_HASH_CTX_SIZE</a>&#160;&#160;&#160;sizeof(SHA256_CTX)</td></tr>
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<tr class="memitem:gab1f8617a558ef0f758439c96d3a4650e"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__HMAC.html#gab1f8617a558ef0f758439c96d3a4650e">DTLS_HMAC_BLOCKSIZE</a>&#160;&#160;&#160;64</td></tr>
<tr class="separator:gab1f8617a558ef0f758439c96d3a4650e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga060019cf2dab9903d58118fe1abe7018"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__HMAC.html#ga060019cf2dab9903d58118fe1abe7018">DTLS_HMAC_DIGEST_SIZE</a>&#160;&#160;&#160;32</td></tr>
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<tr class="memitem:ga3e84ddbef6bf0084252e16e6c547e332"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__HMAC.html#ga3e84ddbef6bf0084252e16e6c547e332">DTLS_HMAC_MAX</a>&#160;&#160;&#160;64</td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:abb19650a510c73117da0e9b88d68f159"><td class="memItemLeft" align="right" valign="top">typedef SHA256_CTX&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="hmac_8h.html#abb19650a510c73117da0e9b88d68f159">dtls_hash_ctx</a></td></tr>
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<tr class="memitem:afa00f0cbe1b7783992467c1c204320b5"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="hmac_8h.html#abb19650a510c73117da0e9b88d68f159">dtls_hash_ctx</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="hmac_8h.html#afa00f0cbe1b7783992467c1c204320b5">dtls_hash_t</a></td></tr>
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Enumerations</h2></td></tr>
<tr class="memitem:ga698cfa036e69361a93dcdd9b19579b23"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__HMAC.html#ga698cfa036e69361a93dcdd9b19579b23">dtls_hashfunc_t</a> { <br/>
&#160;&#160;<a class="el" href="group__HMAC.html#gga698cfa036e69361a93dcdd9b19579b23a065bed423473d8a44394cd4415de3018">HASH_NONE</a> =0, 
<a class="el" href="group__HMAC.html#gga698cfa036e69361a93dcdd9b19579b23a45c78681038e51d5f54554130b0b79ab">HASH_MD5</a> =1, 
<a class="el" href="group__HMAC.html#gga698cfa036e69361a93dcdd9b19579b23a25c481ea5e9f16f9b40fe773528aef03">HASH_SHA1</a> =2, 
<a class="el" href="group__HMAC.html#gga698cfa036e69361a93dcdd9b19579b23a0a7940bf3dbc032d803b1b688e5570e5">HASH_SHA224</a> =3, 
<br/>
&#160;&#160;<a class="el" href="group__HMAC.html#gga698cfa036e69361a93dcdd9b19579b23a3690b7a5bf11282bcdaa199c11408dd3">HASH_SHA256</a> =4, 
<a class="el" href="group__HMAC.html#gga698cfa036e69361a93dcdd9b19579b23abb45ce56a912f1175c413afcb3e1f970">HASH_SHA384</a> =5, 
<a class="el" href="group__HMAC.html#gga698cfa036e69361a93dcdd9b19579b23a6d06d1ec4dbf3aa876fda6ca1c5b0f66">HASH_SHA512</a> =6
<br/>
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Functions</h2></td></tr>
<tr class="memitem:afe0af64930ac5d6a51289df6d1eb4f52"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="hmac_8h.html#afe0af64930ac5d6a51289df6d1eb4f52">dtls_hash_init</a> (<a class="el" href="hmac_8h.html#afa00f0cbe1b7783992467c1c204320b5">dtls_hash_t</a> ctx)</td></tr>
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<tr class="memitem:adb5ad07ab9a1adcdfdc20e13aa37bee6"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="hmac_8h.html#adb5ad07ab9a1adcdfdc20e13aa37bee6">dtls_hash_update</a> (<a class="el" href="hmac_8h.html#afa00f0cbe1b7783992467c1c204320b5">dtls_hash_t</a> ctx, const unsigned char *input, size_t len)</td></tr>
<tr class="separator:adb5ad07ab9a1adcdfdc20e13aa37bee6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a96801bbb62f4c9c872b22cd8e438e51e"><td class="memItemLeft" align="right" valign="top">static size_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="hmac_8h.html#a96801bbb62f4c9c872b22cd8e438e51e">dtls_hash_finalize</a> (unsigned char *buf, <a class="el" href="hmac_8h.html#afa00f0cbe1b7783992467c1c204320b5">dtls_hash_t</a> ctx)</td></tr>
<tr class="separator:a96801bbb62f4c9c872b22cd8e438e51e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a51d5982243691c9e7fa56142c3a8d5d8"><td class="memItemLeft" align="right" valign="top">static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="hmac_8h.html#a51d5982243691c9e7fa56142c3a8d5d8">dtls_hmac_storage_init</a> ()</td></tr>
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<tr class="memitem:gaa1eb35fcb2c2eb69eebaefa8eb4a790d"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__HMAC.html#gaa1eb35fcb2c2eb69eebaefa8eb4a790d">dtls_hmac_init</a> (<a class="el" href="structdtls__hmac__context__t.html">dtls_hmac_context_t</a> *ctx, const unsigned char *key, size_t klen)</td></tr>
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<tr class="memitem:gac3e9ef037800963783e618eafd046702"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structdtls__hmac__context__t.html">dtls_hmac_context_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__HMAC.html#gac3e9ef037800963783e618eafd046702">dtls_hmac_new</a> (const unsigned char *key, size_t klen)</td></tr>
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<tr class="memitem:ga5b1a3c1dcb5461bda44dd70f7bd33181"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__HMAC.html#ga5b1a3c1dcb5461bda44dd70f7bd33181">dtls_hmac_free</a> (<a class="el" href="structdtls__hmac__context__t.html">dtls_hmac_context_t</a> *ctx)</td></tr>
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<tr class="memitem:ga1ef9c88a0a2053b442413a9cea3deb73"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__HMAC.html#ga1ef9c88a0a2053b442413a9cea3deb73">dtls_hmac_update</a> (<a class="el" href="structdtls__hmac__context__t.html">dtls_hmac_context_t</a> *ctx, const unsigned char *input, size_t ilen)</td></tr>
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<tr class="memitem:gab98c992f3f9cc3c2d75077ddd46049bf"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__HMAC.html#gab98c992f3f9cc3c2d75077ddd46049bf">dtls_hmac_finalize</a> (<a class="el" href="structdtls__hmac__context__t.html">dtls_hmac_context_t</a> *ctx, unsigned char *result)</td></tr>
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<h2 class="groupheader">Macro Definition Documentation</h2>
<a class="anchor" id="a7fb242dc4ddd717e5eb67d4bf89618d5"></a>
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          <td class="memname">#define DTLS_HASH_CTX_SIZE&#160;&#160;&#160;sizeof(SHA256_CTX)</td>
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<p>Definition at line <a class="el" href="hmac_8h_source.html#l00040">40</a> of file <a class="el" href="hmac_8h_source.html">hmac.h</a>.</p>

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<h2 class="groupheader">Typedef Documentation</h2>
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          <td class="memname">typedef SHA256_CTX <a class="el" href="hmac_8h.html#abb19650a510c73117da0e9b88d68f159">dtls_hash_ctx</a></td>
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<p>Aaron D. Gifford's implementation of SHA256 see <a href="http://www.aarongifford.com/">http://www.aarongifford.com/</a> </p>

<p>Definition at line <a class="el" href="hmac_8h_source.html#l00038">38</a> of file <a class="el" href="hmac_8h_source.html">hmac.h</a>.</p>

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          <td class="memname">typedef <a class="el" href="hmac_8h.html#abb19650a510c73117da0e9b88d68f159">dtls_hash_ctx</a>* <a class="el" href="hmac_8h.html#afa00f0cbe1b7783992467c1c204320b5">dtls_hash_t</a></td>
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<p>Definition at line <a class="el" href="hmac_8h_source.html#l00039">39</a> of file <a class="el" href="hmac_8h_source.html">hmac.h</a>.</p>

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<h2 class="groupheader">Function Documentation</h2>
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          <td class="memname">static size_t dtls_hash_finalize </td>
          <td>(</td>
          <td class="paramtype">unsigned char *&#160;</td>
          <td class="paramname"><em>buf</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="hmac_8h.html#afa00f0cbe1b7783992467c1c204320b5">dtls_hash_t</a>&#160;</td>
          <td class="paramname"><em>ctx</em>&#160;</td>
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          <td>)</td>
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<p>Definition at line <a class="el" href="hmac_8h_source.html#l00053">53</a> of file <a class="el" href="hmac_8h_source.html">hmac.h</a>.</p>

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          <td class="memname">static void dtls_hash_init </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="hmac_8h.html#afa00f0cbe1b7783992467c1c204320b5">dtls_hash_t</a>&#160;</td>
          <td class="paramname"><em>ctx</em></td><td>)</td>
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<p>Definition at line <a class="el" href="hmac_8h_source.html#l00043">43</a> of file <a class="el" href="hmac_8h_source.html">hmac.h</a>.</p>

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          <td class="memname">static void dtls_hash_update </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="hmac_8h.html#afa00f0cbe1b7783992467c1c204320b5">dtls_hash_t</a>&#160;</td>
          <td class="paramname"><em>ctx</em>, </td>
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          <td></td>
          <td class="paramtype">const unsigned char *&#160;</td>
          <td class="paramname"><em>input</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">size_t&#160;</td>
          <td class="paramname"><em>len</em>&#160;</td>
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<p>Definition at line <a class="el" href="hmac_8h_source.html#l00048">48</a> of file <a class="el" href="hmac_8h_source.html">hmac.h</a>.</p>

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          <td class="memname">static void dtls_hmac_storage_init </td>
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<p>Definition at line <a class="el" href="hmac_8h_source.html#l00060">60</a> of file <a class="el" href="hmac_8h_source.html">hmac.h</a>.</p>

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